Chicken missing feathers from injury

[TheFugitivePen]

Hello, chicken friends!

I have three chickens with bald spots--one on top of her head and two with a large bald spot on their necks (one spot larger than the other).

None of the bald spots seem enflamed, and they're eating, laying, and interacting normally.

The first chicken with a bald spot on top of her head is toward the bottom of the pecking order, and one of my other hens likes to mount her to show dominance (if I hadn't caught that hen with an egg coming out of her bum, I would have thought she was a rooster). The mounting hen tends to grab the feathers on the other's neck or head.

The other hens have bald spots directly under their beaks and heads. One of them seems to be the head hen, and the other is a known bully who HATES when other hens are in the nest boxes when she's laying. I think they may have gotten into a tussle and pulled feathers. Of course, I didn't see the fight, so I'm not 100% sure.

Is there anything else I should be checking for? Should I be worried about the hens continuing to pluck feathers? How long could it take for their neck feathers to grow back?

 

[Eggcessive]

How many hens do you have, and how much room in your coop and run is there? Do they get out to free range? What breeds are they? Overcrowding, too little protein in the diet, too much light or not enough nest boxes inside the coop, and certain more dominant breeds may be a cause of feather picking. When the bully can be identified, some use pinless peepers on that chicken so they cannot see their object well. Here is some reading about peepers:
https://www.eggcartons.com/blogs/news/pinless-peepers

 

[TheFugitivePen]

How many hens do you have, and how much room in your coop and run is there? Do they get out to free range? What breeds are they? Overcrowding, too little protein in the diet, too much light or not enough nest boxes inside the coop, and certain more dominant breeds may be a cause of feather picking. When the bully can be identified, some use pinless peepers on that chicken so they cannot see their object well. Here is some reading about peepers:
https://www.eggcartons.com/blogs/news/pinless-peepers

Thank you!

We have 8 black australorps in a run just over 100 sq feet. They get to free range almost daily, are on a good layer feed, and receive regular black soldier fly larva treats.

I haven't noticed any of the others losing feathers or the spots worsening.